dc.contributor.author	Baghdadi, Jihad Abdul-Hadi III	en
dc.contributor.committeechair	Safaai-Jazi, Ahmad	en
dc.contributor.committeemember	Besieris, Ioannis M.	en
dc.contributor.committeemember	Indebetouw, Guy J.	en
dc.contributor.committeemember	Riad, Sedki Mohamed	en
dc.contributor.committeemember	Scales, Wayne A.	en
dc.contributor.committeemember	Taylor, Larry T.	en
dc.contributor.department	Electrical and Computer Engineering	en
dc.date.accessioned	2014-03-14T20:21:58Z	en
dc.date.adate	1998-05-26	en
dc.date.available	2014-03-14T20:21:58Z	en
dc.date.issued	1998-05-08	en
dc.date.rdate	1999-05-26	en
dc.date.sdate	1998-05-08	en
dc.description.abstract	This dissertation addresses several aspects pertaining to polarization in optical fibers and optical waveguide devices. In particular, the analysis and design of fibers that maintain polarization over long lengths, provide zero polarization-mode dispersion, and function as polarizers or mode filters are presented. First, optimum designs for high-birefringence as well as single-polarization single-mode fibers are studied. For high-birefringence fibers, several index profiles were obtained that provided high birefringence while achieving zero or very small dispersion in 1.3 μm and 1.55 μm windows. Also, few index profiles were found that resulted in single-polarization single-mode operation with zero or very small dispersion at about 1.3 μm and 1.55 μm. A wavelength range of 100 nm to 500 nm was achieved for truly single-mode operation. Second, a comprehensive analysis of polarization-mode dispersion in a multiple-clad fiber due to ellipticity of fiber cross-section is carried out. The analysis results are then used to design large effective area single-mode dispersion-shifted fiber that provides zero polarization-mode dispersion at the wavelength 1.55 μm. Effective area on the order of 122 μm² with mode-field diameter of about 10 μm have been attained for this design. Tolerance analysis on the transmission parameters due to ±1% and ±2% variations in the radii of the fiber layers is carried out. Finally, a wedge-shape dielectric waveguides bounded by conducting planes is introduced and analyzed. Conductor and dielectric losses for the fundamental mode in waveguides with wedge angle of π/n; n ≥ 1, and 2π/3 as a special case with noninteger azimuthal number have been evaluated. These waveguides generally support fewer number of modes for smaller wedge angles and the modes cannot be of TM type. They find applications as mode filters and polarizers..	en
dc.description.degree	Ph. D.	en
dc.identifier.other	etd-42198-232533	en
dc.identifier.sourceurl	http://scholar.lib.vt.edu/theses/available/etd-42198-232533/	en
dc.identifier.uri	http://hdl.handle.net/10919/30522	en
dc.publisher	Virginia Tech	en
dc.relation.haspart	jb-ti-ab.pdf	en
dc.relation.haspart	jb-ac-co.pdf	en
dc.relation.haspart	jb-chap1.pdf	en
dc.relation.haspart	jb-chap2.pdf	en
dc.relation.haspart	jb-chap3.pdf	en
dc.relation.haspart	jb-chap4.pdf	en
dc.relation.haspart	jb-chap5.pdf	en
dc.relation.haspart	jb-chap6.pdf	en
dc.relation.haspart	jb-appen.pdf	en
dc.relation.haspart	jb-refer.pdf	en
dc.rights	In Copyright	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject	birefringence	en
dc.subject	polarization maintaining fiber	en
dc.subject	Polarization-mode dispersion	en
dc.subject	optical communications	en
dc.title	Designs for Zero Polarization-Mode Dispersion And Polarization-Maintaining Fibers	en
dc.type	Dissertation	en
thesis.degree.discipline	Electrical and Computer Engineering	en
thesis.degree.grantor	Virginia Polytechnic Institute and State University	en
thesis.degree.level	doctoral	en
thesis.degree.name	Ph. D.	en

Designs for Zero Polarization-Mode Dispersion And Polarization-Maintaining Fibers

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